/*
*    Phantom v2.0 GUI Automation Software
*    Copyright (C) 2009  John C. Van Arsdall (john@phantomtest.com)
*
*    This program is free software; you can redistribute it and/or modify
*    it under the terms of the GNU General Public License as published by
*    the Free Software Foundation; either version 2 of the License, or
*    (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU General Public License for more details.
*
*    You should have received a copy of the GNU General Public License along
*    with this program; if not, write to the Free Software Foundation, Inc.,
*    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
//#define MINION_EXPORTS
#include "stdafx.h"
#include "minionlib.h"
#include "memorymapper.h"

CMemoryMapper::CMemoryMapper(void)
{
	hMap = 0;
}

CMemoryMapper::~CMemoryMapper(void)
{
	if(hMap){
		CloseHandle(hMap);
	}
}

void* CMemoryMapper::GetPointer(HANDLE inMap)
{
	void* ptr;
	if(!inMap) return 0;
	ptr = MapViewOfFile(inMap, FILE_MAP_ALL_ACCESS, 0, 0, 0);
	return ptr;
}

void* CMemoryMapper::GetPointer(void)
{
	void* ptr;
	hMap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, "MinionMappingObject");
	if(!hMap) return 0;
	ptr = MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0);
	return ptr;
}


HANDLE CMemoryMapper::MapFile(void)
{
	if(hMap){
		CloseHandle(hMap);
	}
	hMap = CreateFileMapping(INVALID_HANDLE_VALUE,    // current file handle 
    0,                              // default security 
    PAGE_READWRITE,                    // read/write permission 
    0,                                 // max. object size 
    MAP_FILE_SIZE,                                 // size of hFile 
    "MinionMappingObject");           // name of mapping object 

	return hMap;
}

void* CMemoryMapper::MakePointer(void)
{
	void* ptr = 0;
	if(!hMap) hMap = MapFile();
	if(!hMap) return 0;
	ptr = MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0);
	return ptr;
}

void CMemoryMapper::UnMap(void* ptr)
{
	if(!UnmapViewOfFile(ptr)){
	}
}
